Short answer: the Monoprice Monolith M-10 V2 for deep bass per dollar, the Kef KC62 for a tiny sealed box. The M-10 V2 is a 10-inch THX-certified ported sub with 500W RMS that reaches 17-20Hz. The KC62 answers with dual 6.5-inch force-canceling drivers and 1000W in an ultra-compact basketball-sized sealed enclosure.
The case for the Kef KC62: Dual 6.5-inch force-canceling drivers with 1000W in ultra-compact basketball-sized sealed enclosure.
What the Monoprice Monolith M-10 V2 gets right: 10-inch THX-certified ported with 500W RMS reaches 17-20Hz.
Buy the Monoprice Monolith M-10 V2. It is rated higher for sound quality than the Kef KC62 and costs less, so there is no real case for the other one.
Still deciding? The full Subwoofers rankings cover every ranked option.
Specifications Side By Side
| Kef KC62 | Monoprice Monolith M-10 V2 | |
|---|---|---|
| Price | $1,699.99 | $753.97 |
| Ranked | #145 of 145 in Medium Home Subwoofers (30-75 lbs) | #109 of 145 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | sealed | ported, front |
| Output SPL at 20 Hz | 80.0 dB | 104.8 dB |
| Output SPL at 25 Hz | 84.6 dB | 108.5 dB |
| Output SPL at 31.5 Hz | 88.5 dB | 109.3 dB |
| Output SPL at 40 Hz | 92.2 dB | 109.7 dB |
| Output SPL at 50 Hz | 95.1 dB | 110.1 dB |
| Output SPL at 63 Hz | 97.7 dB | 110.6 dB |
| Output SPL at 80 Hz | 102.6 dB | 110.9 dB |
| Output SPL at 100 Hz | 104.2 dB | 111.2 dB |
| CEA-2010-A Average (40-80Hz) | 96.9 dB | 110.3 dB |
| Dimensions | 9.7"H x 10.1"W x 9.8"D (245.9 x 255.8 x 247.9 mm) | 20.9"H x 15"W x 18.9"D (530.9 x 381.0 x 480.1 mm) |
| Weight | 30.9 lbs (14.0 kg) | 72.5 lbs (32.9 kg) |
| Warranty | 5/2/5 | 5 |
| Cabinet Color | black, white | black |
| Country | United Kingdom | United States |
| Measurement Source | ErinsAudioCorner | Manufacturer |
| Amplifier Power | 1000W RMS | 500W RMS |
| Frequency Response | 11-200Hz | 17-20Hz |
| Drivers | 2x 6.5" (165mm) driver | 10" (254mm) driver |
| Output SPL at 15 Hz | - | 93.9 dB |
| Output SPL at 125 Hz | - | 111.5 dB |
| Inputs | - | XLR, RCA, XLR passthrough out |
| XLR Input | - | Yes |
| RCA Input | - | Yes |
| TRS Input | - | No |
| Optical Input | - | No |
| Coaxial Input | - | No |
| USB Input | - | No |
| HDMI Input | - | No |
| AES Input | - | No |
| Aux Input | - | No |
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Prices on this page were last checked September 23, 2026 at 11:24 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Kef KC62: $1,699.99 Amazon eBay
Pros: Dual 6.5-inch force-canceling drivers with 1000W in ultra-compact basketball-sized sealed enclosure. Deep extension to 11Hz with five room placement EQ presets. Elegant design fits any décor.
Full Kef KC62 review and specifications →
| Amplifier Power | 1000W RMS |
|---|---|
| CEA-2010-A Average (40-80Hz) | 96.9 dB |
| Cabinet Color | black, white |
| Country | United Kingdom |
| Dimensions | 9.7"H x 10.1"W x 9.8"D (245.9 x 255.8 x 247.9 mm) |
| Drivers | 2x 6.5" (165mm) driver |
| Enclosure | sealed |
| Frequency Response | 11-200Hz |
| Measurement Source | ErinsAudioCorner |
| Output SPL at 20 Hz | 80.0 dB |
| Output SPL at 25 Hz | 84.6 dB |
| Output SPL at 31.5 Hz | 88.5 dB |
| Output SPL at 40 Hz | 92.2 dB |
| Output SPL at 50 Hz | 95.1 dB |
| Output SPL at 63 Hz | 97.7 dB |
| Output SPL at 80 Hz | 102.6 dB |
| Output SPL at 100 Hz | 104.2 dB |
| Warranty | 5/2/5 |
| Weight | 30.9 lbs (14.0 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by ErinsAudioCorner; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
Monoprice Monolith M-10 V2: $753.97 Amazon eBay
Pros: 10-inch THX-certified ported with 500W RMS reaches 17-20Hz. HDF cabinet eliminates resonance-induced coloration. Extended EQ and THX EQ modes for flexibility. Low distortion output. Best for rooms under 2500 cubic feet. Exceptional budget value at $754.
Notes: Product # 42843
Full Monoprice Monolith M-10 V2 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 500W RMS |
| Aux Input | No |
| CEA-2010-A Average (40-80Hz) | 110.3 dB |
| Cabinet Color | black |
| Coaxial Input | No |
| Country | United States |
| Dimensions | 20.9"H x 15"W x 18.9"D (530.9 x 381.0 x 480.1 mm) |
| Drivers | 10" (254mm) driver |
| Enclosure | ported, front |
| Frequency Response | 17-20Hz |
| HDMI Input | No |
| Inputs | XLR, RCA, XLR passthrough out |
| Measurement Source | Manufacturer |
| Optical Input | No |
| Output SPL at 15 Hz | 93.9 dB |
| Output SPL at 20 Hz | 104.8 dB |
| Output SPL at 25 Hz | 108.5 dB |
| Output SPL at 31.5 Hz | 109.3 dB |
| Output SPL at 40 Hz | 109.7 dB |
| Output SPL at 50 Hz | 110.1 dB |
| Output SPL at 63 Hz | 110.6 dB |
| Output SPL at 80 Hz | 110.9 dB |
| Output SPL at 100 Hz | 111.2 dB |
| Output SPL at 125 Hz | 111.5 dB |
| RCA Input | Yes |
| TRS Input | No |
| USB Input | No |
| Warranty | 5 |
| Weight | 72.5 lbs (32.9 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- These figures are manufacturer-specified rather than independently measured.
- Head-to-Head Comparisons
- Monoprice Monolith M-10 V2 vs Klipsch R-121SW
- Monoprice Monolith M-10 V2 vs RSL (Rogersound Labs) Speedwoofer 10S MKII
- Monoprice Monolith M-10 V2 vs Monoprice SSW-10
- Monoprice Monolith M-10 V2 vs SVS PB-1000 PRO
- Monoprice Monolith M-10 V2 vs SVS SB-2000
- Monoprice Monolith M-10 V2 vs JBL HDI-1200P
- Monoprice Monolith M-10 V2 vs Power Sound Audio (PSA) XS15SE
- Monoprice Monolith M-10 V2 vs Rythmik F12
- See all 16 comparisons